Researchers took 66 children between the ages of five and six and asked them questions about stories — some of which were drawn from fairy tales, others from the Old Testament — in order to determine whether the children believed the characters in them were real or fictional.

“Children with exposure to religion — via church attendance, parochial schooling, or both — judged [characters in religious stories] to be real,” the authors wrote. “By contrast, children with no such exposure judged them to be pretend,” just as they had the characters in fairy tales. But children with exposure to religion judged many characters in fantastical, but not explicitly religious stories, to also be real — the equivalent of being incapable of differentiating between Mark Twain’s character Tom Sawyer and an account of George Washington’s life. LINK.